I was on Letrozole cd4-9 so I dont believe the spike in temp there would be ovulation since that's what the medication is supposed to help me do 5-8 days after my last pill.... but my temps have been high since then and just the last 2 days started going down... would this be a dip before a temp spike (ovulation)? Has anyone seen a bbt chart like this?

I have been using Clearblue advanced ovulation tests since sunday and Monday- today have all been "high" readings. Thanks :)